Note 2 - Summary of Significant Accounting Policies - Computation of Basic and Diluted Net Loss Per Share (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Basic Shares:
Weighted average common shares outstanding (in shares)	13,299,824	13,144,314
Basic Shares (in shares)	13,299,824	13,144,314
Diluted Shares:
Basic Shares (in shares)	13,299,824	13,144,314
Dilutive Shares (in shares)	13,299,824	13,144,314